Should I just move on?

I am very confused about this guy from my school. He used to look at me a lot but now he never looks at me and it actually feels like he avoids eye contact with me. I added him on instagram and he followed me back and he liked my instagram story which was a picture of me. And so i dm'ed him on instagram asking if i could get his snapchat and he gave it to me but it was a very cold answer. He added me back but he never texted me or send me any snap. He watched my snapchat story though. He didn't comment on it or anything. He seems very uninterested. Should i just stop trying cause i feel like i have done everything and i have showed him so much how interested i am and he is just not giving me the same energy back. I live by the quote 'if he wanted to he would' and honestly it doesn't seem like he wants anything to do with me, cause if he was interested he would have at least send me a snap. And i don't want to snap him first cause i already put in so much energy. I should just move on right?

Should I just move on?
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